4 Ply Laminates (Paper/PE/Alu.Foil/PE)

Plain paper is insufficient for medicinal and food product packing because of poor barrier properties, low heat sealability and strength. So, it is impregnated with some additive or laminated with aluminium and plastic to improve its functional properties. One such most popular paper laminate used in packing pharmaceutical powders, ORS etc is Paper-PE-Foil-PE laminate which is popularly known as 4 ply laminate. The foil content of the laminate gives required barrier property whereas the extruded PE gives flexibility to the laminate.